National Electrical Code (NEC)

Overview: The approach used in this training is unique in that it covers the complete electrical installation from the service equipment to the panel and finally to the loads. All along the way, the participant will apply the necessary calculations as required by the National Electrical Code (NEC) to ensure an efficient and safe electrical system.

The sizing of conductors used for branch circuits from the panel board to the load will be based on the type of load (motor/non-motor), load duty cycle (continuous/non-continuous), device termination temperature ratings, conductor insulation types, ambient air temperature, number of conductors in a raceway, and voltage drop calculation results.

The sizing of over-current protection devices (OCPD – circuit breakers/fuses) installed at the panel board will be covered along with the sizing of motor overloads.

The sizing of conductors used for feeders from the service equipment to the panel board will be based on the type of load (motor/non-motor), load duty cycle (continuous/non-continuous), device termination temperatures, conductor insulation types, ambient air temperature, number of conductors in a raceway, and voltage drop calculation results.

The sizing of over-current protection devices (OCPD – circuit breakers/fuses) installed at the service equipment.

Participants will learn how to interpret and calculate all the above electrical parameters using various tables/charts found in the NEC Book.

The participant will be able to use various tables from the National Electrical Code (NEC) book to determine the amount of electrical wiring and components that can be safely installed in electrical enclosures (Electrical Box Fill).